CN201386663Y - Water-feeding pump with self-flushing function - Google Patents
Water-feeding pump with self-flushing function Download PDFInfo
- Publication number
- CN201386663Y CN201386663Y CN200920013816U CN200920013816U CN201386663Y CN 201386663 Y CN201386663 Y CN 201386663Y CN 200920013816 U CN200920013816 U CN 200920013816U CN 200920013816 U CN200920013816 U CN 200920013816U CN 201386663 Y CN201386663 Y CN 201386663Y
- Authority
- CN
- China
- Prior art keywords
- water
- pump
- feeding pump
- flushing
- self
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a water-feeding pump with self-flushing function, which belongs to the liquid pump technical field, in particular to an improved structure of a water-feeding pump. The utility model provides a water-feeding pump with self-flushing function. The water-feeding pump can prevent the stationary ring crack phenomenon of a mechanical seal ring caused by the excessive water temperature differentials between the medium water and the medium water in the water-feeding pump, and at the same time can avoid the blockage to the mechanical seal caused by vendor-supplied medium water which may contain impurities. The water-feeding pump comprises a pump body. A water inlet and a water outlet are arranged at the lateral side of the pump body. An impeller is arranged on the shaft of the pump body. A sealing body is arranged at both sides of the shaft. The structure key point is that a screw rod is fixed on a shaft sleeve in a mechanical sealing body cavity. A flushing water outlet and a flushing water inlet are respectively arranged on the sealing body above and below the mechanical sealing body cavity.
Description
Technical field:
The utility model belongs to the liquid pump technical field, more particularly, relates to a kind of improvement of feed water pump structure; This feed water pump has well from washing capacity, mainly is to be used for thermal power plant unit boiler feedwater, also carries physico-chemical property to be similar to the medium of water in the oil that moves under high temperature, high pressure applicable to design, the chemical-process.
Background technique:
At present, outer water feeding and washing mode is adopted in the mechanical seal of the unit boiler feed water pump in many thermal power plants, and promptly the scene provides the water source with certain pressure, and the mechanical seal position of feed water pump is washed.But the WATER AS FLOW MEDIUM that this backwashing manner provides and the WATER AS FLOW MEDIUM temperature difference in the feed water pump are very big, thereby make the stationary ring of mechanical seal ring be easy to generate explosion; And the WATER AS FLOW MEDIUM of outer confession may contain certain impurity, causes the obstruction of mechanical seal probably, has seriously influenced production.
The model utility content:
The utility model is exactly at the problems referred to above, and a kind of feed water pump that has from washing capacity is provided; This feed water pump can prevent to cause because of the WATER AS FLOW MEDIUM excessive temperature differentials in WATER AS FLOW MEDIUM and the feed water pump generation of the stationary ring explosion phenomenon of mechanical seal ring; Simultaneously, also avoided because of adopting the WATER AS FLOW MEDIUM flushing of outer confession the obstruction of the mechanical seal that causes by the impurity that may contain in the WATER AS FLOW MEDIUM.
For realizing above-mentioned purpose of the present utility model, the utility model adopts following technological scheme, the utility model comprises the pump housing, the side of the pump housing is water inlet, water outlet, the axle of the pump housing is provided with impeller, the both sides of axle are provided with seal, and its structure outline is to be fixed with screw rod on the axle sleeve of the endoceliac axle of mechanical seal, is respectively arranged with sparge water outlet and sparge water import on the seal of mechanical seal body cavity top and below.
The beneficial effects of the utility model:
Feed water pump utilization of the present utility model is provided with screw rod fixing on the axle sleeve of the endoceliac axle of mechanical seal and rotates, the WATER AS FLOW MEDIUM that feed water pump is carried is sent, after process heat exchanger, magnetic filter cool off respectively, filter, avoided outer excessive for WATER AS FLOW MEDIUM and pumped medium water temperature difference and the vibration and the stationary ring explosion that cause can be saved one simultaneously and be overlapped power system.
Description of drawings:
Fig. 1 is seal of the present utility model and dependency structure schematic representation;
Fig. 2 is the structural representation of the utility model feed water pump.
Embodiment:
The utility model comprises the pump housing 10, the side of the pump housing 10 is water inlet 9, water outlet 11, the axle 1 of the pump housing 10 is provided with impeller 8, the both sides of axle 1 are provided with seal 5, be fixed with screw rod 6 on the axle sleeve 7 of the axle 1 in the mechanical seal body cavity 3, be respectively arranged with sparge water outlet 4 and sparge water import 2 on the seal 5 of mechanical seal body cavity 3 tops and below.
During feed water pump work, the screw rod 6 that the axle 1 of the pump housing 10 drives on the axle sleeve 7 rotates, screw rod 6 rotates and produces certain pressure, WATER AS FLOW MEDIUM is got seal 5 by sparge water outlet 4, WATER AS FLOW MEDIUM flows out after heat exchanger, again through magnetic filter, again enter in the mechanical seal body cavity 3 of seal 5 from sparge water import 2 then, the rotating ring and the stationary ring of seal 5 washed.
Described heat exchanger model is QDG170-1400, and described magnetic filter model is MAF100G1/2; All belong to market and can purchase part.
Claims (1)
1, has feed water pump from washing capacity, comprise the pump housing (10), the side of the pump housing (10) is water inlet (9), water outlet (11), the axle (1) of the pump housing (10) is provided with impeller (8), the both sides of axle (1) are provided with seal (5), it is characterized in that being fixed with screw rod (6) on the axle sleeve (7) of the axle (1) in the mechanical seal body cavity (3), be respectively arranged with sparge water on the seal (5) of mechanical seal body cavity (3) top and below and export (4) and sparge water import (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920013816U CN201386663Y (en) | 2009-05-19 | 2009-05-19 | Water-feeding pump with self-flushing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920013816U CN201386663Y (en) | 2009-05-19 | 2009-05-19 | Water-feeding pump with self-flushing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201386663Y true CN201386663Y (en) | 2010-01-20 |
Family
ID=41579197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920013816U Expired - Fee Related CN201386663Y (en) | 2009-05-19 | 2009-05-19 | Water-feeding pump with self-flushing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201386663Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111420446A (en) * | 2020-04-14 | 2020-07-17 | 山东京博中聚新材料有限公司 | Colloidal particle pump with pipe network type colloidal particle water-tight seal flusher |
-
2009
- 2009-05-19 CN CN200920013816U patent/CN201386663Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111420446A (en) * | 2020-04-14 | 2020-07-17 | 山东京博中聚新材料有限公司 | Colloidal particle pump with pipe network type colloidal particle water-tight seal flusher |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104307203B (en) | Circulating compensation type purifying plant | |
| CN201386663Y (en) | Water-feeding pump with self-flushing function | |
| CN203251189U (en) | Motor | |
| CN204404866U (en) | Clean-in-place system waste-heat recovery device | |
| CN104141580A (en) | Straight flow turbine | |
| CN201474996U (en) | Internal circulation cooling type submersible sewage pump | |
| CN204320727U (en) | Photovoltaic is produced and is used silicon chip cleaning liquid recycling device | |
| CN204061222U (en) | Nash hytor intermediate water recycle device | |
| CN103206413A (en) | Mechanical seal for main feed water pump | |
| CN201546962U (en) | Oil seal type vacuum pump oil tank with cooling device | |
| CN203394626U (en) | Water pump for loader | |
| CN103590865B (en) | A kind of industrial afterheat recovery and power generation system | |
| CN203516734U (en) | Rotary spiral non-contact main shaft sealing mechanism | |
| CN201461376U (en) | Sealing device of pump shaft | |
| CN203257754U (en) | Heat shield structure for main water-feeding pump | |
| CN206069787U (en) | Using the excessive fuel consumption fast purification decolouring oil purifier of water-ring vacuum pump | |
| CN203257728U (en) | Mechanical seal for main water-feeding pump | |
| CN203879750U (en) | Shield pump conveying high temperature liquid | |
| CN203035436U (en) | Water turbine suitable for cooling tower | |
| CN204319827U (en) | Circulating compensation type purifying plant | |
| CN204003506U (en) | A kind of pump with water-cooling jacket | |
| CN203130675U (en) | Hydraulic covering machine oil tank cooling device | |
| CN203500036U (en) | High-efficiency hot water circulating pump | |
| CN203926045U (en) | Low power consumption cooling pump | |
| CN203742880U (en) | Horizontal hydraulic turbine set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100120 Termination date: 20150519 |
|
| EXPY | Termination of patent right or utility model |